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Metals, such as copper and silver, can be extremely toxic to bacteria at exceptionally low concentrations. Because of this biocidal activity, metals have been widely used as antimicrobial agents in a multitude of applications related with agriculture, healthcare, and the industry in general. A large number of microorganisms live in the human environment. if the balance of these creatures in nature is disturbed, the health of the individual and society will be threatened due to the production and emission of unpleasant odors and the reduction of health standards. The presence of microorganisms on textiles can cause adverse effects such as discoloration or staining on textiles, decomposition of fibrous materials, reduced strength, and eventually decay of textiles. Most fibers and polymers do not show resistance to the effects of microbes and by providing growth factors for microorganisms such as the right temperature and humidity, nutrients from sweat and fat from skin glands, dead skin cells as well as materials used in the stage of finishing the textiles causes the rapid growth and spread of various microbes. With the advent of nanotechnology, various industries and human daily life underwent changes. In recent years, increasing research on nanoparticles has led to the production of textiles with greater efficiency and added value. These modified textiles prevent the spread of unpleasant odors, the spread, and transmission of diseases. This article reviews the basics and principles of antimicrobial tetiles, as well as a brief overview of antimicrobial materials and nanostructures with antimicrobial properties.

Metais como cobre e prata podem ser extremamente tóxicos para bactérias em concentrações excepcionalmente baixas. Devido a esta atividade biocida, os metais têm sido amplamente utilizados como agentes antimicrobianos em uma infinidade de aplicações relacionadas à agricultura, saúde e indústria em geral. Muitos microrganismos vivem no ambiente humano e, se o equilíbrio dessas criaturas na natureza for alterado, a saúde dos indivíduos e da sociedade estará ameaçada devido à produção e emissão de odores desagradáveis e à redução dos padrões de saúde. A presença de microrganismos em têxteis pode causar efeitos adversos, como descoloração ou manchas, decomposição de materiais fibrosos, resistência reduzida e, eventualmente, deterioração. A maioria das fibras e polímeros não apresenta resistência aos efeitos dos micróbios e fornecem fatores de crescimento para os microrganismos, como temperatura e umidade adequadas, nutrientes do suor e gordura das glândulas da pele, células mortas da pele, bem como materiais usados na etapa de acabamento causando crescimento e disseminação de vários micróbios. Com o advento da nanotecnologia, diversas indústrias e o cotidiano humano passaram por mudanças. Nos últimos anos, o aumento da pesquisa em nanopartículas levou à produção de têxteis com maior eficiência e valor agregado. Esses têxteis modificados evitam a propagação de odores desagradáveis, a propagação e a transmissão de doenças. Este artigo analisa os fundamentos e princípios dos têxteis antimicrobianos, bem como uma breve visão geral dos materiais antimicrobianos e nanoestruturas com propriedades antimicrobianas.

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Metals, such as copper and silver, can be extremely toxic to bacteria at exceptionally low concentrations. Because of this biocidal activity, metals have been widely used as antimicrobial agents in a multitude of applications related with agriculture, healthcare, and the industry in general. A large number of microorganisms live in the human environment. if the balance of these creatures in nature is disturbed, the health of the individual and society will be threatened due to the production and emission of unpleasant odors and the reduction of health standards. The presence of microorganisms on textiles can cause adverse effects such as discoloration or staining on textiles, decomposition of fibrous materials, reduced strength, and eventually decay of textiles. Most fibers and polymers do not show resistance to the effects of microbes and by providing growth factors for microorganisms such as the right temperature and humidity, nutrients from sweat and fat from skin glands, dead skin cells as well as materials used in the stage of finishing the textiles causes the rapid growth and spread of various microbes. With the advent of nanotechnology, various industries and human daily life underwent changes. In recent years, increasing research on nanoparticles has led to the production of textiles with greater efficiency and added value. These modified textiles prevent the spread of unpleasant odors, the spread, and transmission of diseases. This article reviews the basics and principles of antimicrobial tetiles, as well as a brief overview of antimicrobial materials and nanostructures with antimicrobial properties.

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Background: Artificial intelligence (AI) has the potential to reshape medical practice and the delivery of healthcare. Online discussions surrounding AI's utility in these domains are increasingly emerging, likely due to considerable interest from healthcare practitioners, medical technology developers, and other relevant stakeholders. However, many practitioners and medical students report limited understanding and familiarity with AI. Objective: To promote research, events, and resources at the intersection of AI and medicine for the online medical community, we created a Twitter-based campaign using the hashtag #MedTwitterAI. Methods: In the present study, we analyze the use of #MedTwitterAI by tracking tweets containing this hashtag posted from 26th March, 2019 to 26th March, 2021, using the Symplur Signals hashtag analytics tool. The full text of all #MedTwitterAI tweets was also extracted and subjected to a natural language processing analysis. Results: Over this time period, we identified 7,441 tweets containing #MedTwitterAI, posted by 1,519 unique Twitter users which generated 59,455,569 impressions. The most common identifiable locations for users including this hashtag in tweets were the United States (378/1,519), the United Kingdom (80/1,519), Canada (65/1,519), India (46/1,519), Spain (29/1,519), France (24/1,519), Italy (16/1,519), Australia (16/1,519), Germany (16/1,519), and Brazil (15/1,519). Tweets were frequently enhanced with links (80.2%), mentions of other accounts (93.9%), and photos (56.6%). The five most abundant single words were AI (artificial intelligence), patients, medicine, data, and learning. Sentiment analysis revealed an overall majority of positive single word sentiments (e.g., intelligence, improve) with 230 positive and 172 negative sentiments with a total of 658 and 342 mentions of all positive and negative sentiments, respectively. Most frequently mentioned negative sentiments were cancer, risk, and bias. Most common bigrams identified by Markov chain depiction were related to analytical methods (e.g., label-free detection) and medical conditions/biological processes (e.g., rare circulating tumor cells). Conclusion: These results demonstrate the generated considerable interest of using #MedTwitterAI for promoting relevant content and engaging a broad and geographically diverse audience. The use of hashtags in Twitter-based campaigns can be an effective tool to raise awareness of interdisciplinary fields and enable knowledge-sharing on a global scale.

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El objetivo de este estudio fue evaluar los efectos de la nutrición parenteral total (NPT) pre-operatoria sobre la morbi-mortalidad despues de operaciones del tracto digestivo. Fueron estudiados 51 pacientes con edad promedio de 47 años. Todos los pacientes incluidos en el estudio eran desnutridos, con albúmina en suero menor que 3,0 g/dl y perdida de peso mayor que el 10 por ciento del peso usual. La duración promedio de la NPT pre-operatoria fue de 19,2 días. Las principales indicaciones quirúrgicas fueron obstrucción del tracto digestivo alto y enfermedades inflamatorias intestinales. La albumina en suero promedio inicial fue de 2,34 g/dl y antes de la operación fue de 2,92 g/dl (p<0,05). Cuatro pacientes no fueron operados por motivos clinicos y cuatro fueron sometidos a operaciones paliativas. Ocurrieron complicaciones post-operatorias en un 29,8 por ciento de los casos y la mortalidad general fue de 10,6 por ciento. Los resultados de este estudio sugieren que la NPT pre-operatoria permite mejorar el estado nutricional y obtener indices aceptables de morbimortalidad en pacientes severamente desnutridos. (AU)

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El objetivo de este estudio fue evaluar los efectos de la nutrición parenteral total (NPT) pre-operatoria sobre la morbi-mortalidad despues de operaciones del tracto digestivo. Fueron estudiados 51 pacientes con edad promedio de 47 años. Todos los pacientes incluidos en el estudio eran desnutridos, con albúmina en suero menor que 3,0 g/dl y perdida de peso mayor que el 10 por ciento del peso usual. La duración promedio de la NPT pre-operatoria fue de 19,2 días. Las principales indicaciones quirúrgicas fueron obstrucción del tracto digestivo alto y enfermedades inflamatorias intestinales. La albumina en suero promedio inicial fue de 2,34 g/dl y antes de la operación fue de 2,92 g/dl (p<0,05). Cuatro pacientes no fueron operados por motivos clinicos y cuatro fueron sometidos a operaciones paliativas. Ocurrieron complicaciones post-operatorias en un 29,8 por ciento de los casos y la mortalidad general fue de 10,6 por ciento. Los resultados de este estudio sugieren que la NPT pre-operatoria permite mejorar el estado nutricional y obtener indices aceptables de morbimortalidad en pacientes severamente desnutridos.

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